Hi, I was just wondering if anybody out there have had problems with battery life after El Capitan upgrade...I recently upgraded to El Capitan and before I upgraded everything was fine with my battery, since then I have exchanged 2 non apple batteries and both are good for about a week and then they suddenly stop charging for no reason. I have had one battery exchanged by the supplier because I believed it may be faulty but that has just done the same thing again....Could it be that non apple products are being prevented from functioning since El Capitan upgrade...seems very strange as all was OK until upgrade...Oh my Macbook is Mid 2009